After a brief introduction on the present situation of hydro-shaping technique at home and abroad and the technological peculiarity of fascia board girder ,the simulative experiment was designed and the finite element models of direct shaping and stepped shaping were established.

在簡(jiǎn)要介紹液壓成形技術(shù)在國(guó)內(nèi)外的現(xiàn)狀及儀表板梁的工藝特點(diǎn)之后，設(shè)計(jì)了仿真試驗(yàn)并建立了直接成形和分步成形的有限元模型。

The concentration of fluorine in the LPD-SiO/sub 2/ change with the concentration of hydro-fluorosilicic, and by the FTIR spectroscopy we find the concentration of about 1.5M will get the maximum concentration of fluoric incorporation.

在LPD含氟二氧化矽的實(shí)驗(yàn)中，調(diào)變六氟矽酸的濃度將可得到不同含氟量的二氧化矽膜，藉由FTIR的頻譜可知全网免费一级毛片，1.5M的濃度可得最高之含氟量。

Li2CO3 could greatly surpress the production of hydro fluoric acid in electrolyte solution even at elevated temperatures. With the increase of Li2CO3 ratio in electrolyte solution, the HF contents decreased.

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It is very important to preplan first aid and treatment for fluorine and hydro-fluoric acid exposures because of their unique properties.

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In this paper, the reviews of chemical weathering, global carbon cycling and the interrelation among their characteristics as well as the studies on fluvial hydro-chemistry at home and abroad are included.

本文綜述了化學(xué)風(fēng)化作用與全球碳循環(huán)的研究現(xiàn)狀，著重介紹了化學(xué)風(fēng)化作用與碳循環(huán)的特征之間的相互作用關(guān)系十八禁免费A片AV毛片无码网站，詳細(xì)闡明了在二者的影響下國(guó)內(nèi)外河流水化學(xué)的研究成果国产在线观看三级片。

The detailed representation of cascade hydro plants, which includes water volume, water inflow, water discharge, forebay elevation, tailrace elevation and effective water head, is studied in the proposed strategy. The uncertainties, such as water inflows, electricity prices and unit status are taken into account as well.

模型全面分析了蓄水量、棄水量精品国自产在线观看、前池水位www.aaaaaaaav、放水路水位、發(fā)電水頭之間的關(guān)系欧美午夜免费福利，并考慮了電價(jià)久久久久久免费大片、入庫(kù)徑流量、機(jī)組運(yùn)行狀況等不確定因素對(duì)梯級(jí)水電站短期優(yōu)化調(diào)度問(wèn)題的影響国产日韩Av无码毛片尤物。

Companies give full play to the technological advantages of Tsinghua University, the traditional hydro-generator equipment for technical improvements, development, the introduction of efficient runner, has developed a hydraulic automatic adjustment of excitation automatic control, remote monitoring parameters and super output reactive Shuilun automation power generating equipment, power station can increase the overall economic efficiency of over 10%.

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When production can be greater than production, give rise to a series of hydro-geological environment.

當(dāng)開采量大于可開采量時(shí)，會(huì)引起一系列的水文地質(zhì)環(huán)境問(wèn)題啊啊啊不要慢点。

The four well-known skeleton hydro-power stations of West-East Electricity Transmission Project, named Xiangjiaba, Xiluodu, Baihetan and Wudongde from the lower reaches of Jinshajiang River to upriver reaches, are all distributed in this area. Based on the analysis of the resource exploitation and industry sustainable development status, current problems and future scenarios, the main conclusions go as follows:(1) There are abundant and varied agricultural resources, widely distributed mineral resources with valuable predominant minerals, potential tourism resources, but some main problems such as lower level of exploration and development, serious waste and pollution, restraints of financing and transportation and eco-environmental frangibility still call for immediate solution;(2) Regional economy develops fast but the overall level is low-farming and animal husbandry industries, In which crop-plantation takes the main part, dominates in the sectional structure of economy, and forestry and specialty industries need to be further developed. The existed restraints such as unbalanced structural and regional economic distribution, acute structural deficiency and low economic efficiency need to be cleared out, of the way to a sustainable future.

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Takes Downside Door of C70 Gondola Car, Shell of The NSW Type Hand Brake, 12-Inch Hydro-Checks Front Cover and Porthole Cover of Grain Hopper Car and so on as subjects, by studying on general digitial methods of both DYNAFORM and Pro/E, expounds the regular cognizance about various typical forming processes. Consequently, the manufacturing of production will be more foreseeable and scientific.

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